Ana Martins, Sofia Pimenta, Frederico Rajão Martins, Beatriz Samões, Rafaela Nicolau, Eva Mariz, Lúcia Costa
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Pulmonary sarcoidosis and immune-mediated necrotizing myopathy: an uncommon coincidence.
Introduction: Immune-mediated necrotizing myopathy (IMNM) is characterized by acute or subacute, severe proximal muscle weakness and myofiber necrosis with minimal inflammatory cell infiltrate observed on muscle biopsy. On the other hand, sarcoidosis is characterised by the presence of non-caseating granulomas that can develop in several organs.
Case report: We present the unique case of a 49-year-old woman, with no previous medical history, who had a rare concomitant occurrence of IMNM and pulmonary sarcoidosis. This condition was successfully treated with a combination of corticosteroids and rituximab along with rehabilitation program.
Discussion: This association has been reported in only two previous case reports. This highlights the importance of further research on the connection between sarcoidosis and other forms of inflammatory myopathies.
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